<template>
  <div class="app-container">
    <h2 style="text-align: center;">发布新课程</h2>

    <!--步骤条-->
    <el-steps :active="3" process-status="wait" align-center style="margin-bottom: 40px;">
      <el-step title="填写课程基本信息"/>
      <el-step title="创建课程大纲"/>
      <el-step title="提交审核"/>
    </el-steps>

    <!--展示课程基本信息-->
    <div class="ccInfo">
      <img :src="coursePublish.cover">
      <div class="main">
        <h2>{{ coursePublish.title }}</h2>
        <p class="gray"><span>共{{ coursePublish.lessonNum }}课时</span></p>
        <p><span>所属分类: {{ coursePublish.subjectLevelOne }} -- {{ coursePublish.subjectLevelTwo }}</span></p>
        <p>课程讲师: {{ coursePublish.teacherName }}</p>
        <h3 class="red">￥{{ coursePublish.price }}</h3>
      </div>

    </div>
    <el-form label-width="120px">
      <el-form-item>
        <el-button @click="previous">返回修改</el-button>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
      </el-form-item>
    </el-form>

  </div>
</template>

<script>
import course from '@/api/edu/course'
export default {
  name: 'Publish',
  data() {
    return {
      saveBtnDisabled: false, // 保存按钮是否禁用
      courseId: '', // 课程id
      coursePublish: {}

    }
  },
  created() {
    this.init()
  },
  methods: {
    init() {
      // 根据路径courseId来获取课程基本信息
      if (this.$route.params && this.$route.params.id) {
        this.courseId = this.$route.params.id
        this.fetchCoursePublishInfoById()
      }
    },

    // 获取课程基本信息
    fetchCoursePublishInfoById() {
      course.getCoursePublishInfoById(this.courseId).then(result => {
        this.coursePublish = result.data.item
      })
    },

    previous() {
      this.$router.push({ path: '/edu/course/chapter/' + this.courseId })
    },

    publish() {
      // 发布课程
      course.publishCourse(this.courseId).then(result => {
        // 跳转到展示界面
        this.$router.push({ path: '/edu/course/list' })
      })
    }
  }
}
</script>

<style scoped>
  .ccInfo {
    background: #f5f5f5;
    padding: 20px;
    overflow: hidden;
    border: 1px dashed #DDD;
    margin-bottom: 40px;
    position: relative;
  }
  .ccInfo img {
    background: #d6d6d6;
    width: 500px;
    height: 278px;
    display: block;
    float: left;
    border: none;
  }
  .ccInfo .main {
    margin-left: 520px;
  }

  .ccInfo .main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    line-height: 1;
    font-weight: normal;
  }
  .ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
  }

  .ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
  }
  .ccInfo .main h3 {
    left: 540px;
    bottom: 20px;
    line-height: 1;
    font-size: 28px;
    color: #d32f24;
    font-weight: normal;
    position: absolute;
  }
</style>
